1243244044 has 24 divisors (see below), whose sum is σ = 2493001728. Its totient is φ = 531423120.

The previous prime is 1243244039. The next prime is 1243244059. The reversal of 1243244044 is 4404423421.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47242 + ... + 68689.

It is an arithmetic number, because the mean of its divisors is an integer number (103875072).

Almost surely, 2^1243244044 is an apocalyptic number.

1243244044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1243244044 is an abundant number, since it is smaller than the sum of its proper divisors (1249757684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243244044 is a wasteful number, since it uses less digits than its factorization.

1243244044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116325 (or 116323 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 1243244044 is about 35259.6659655193. The cubic root of 1243244044 is about 1075.2731360041.

Adding to 1243244044 its reverse (4404423421), we get a palindrome (5647667465).

The spelling of 1243244044 in words is "one billion, two hundred forty-three million, two hundred forty-four thousand, forty-four".